Ax-head



(No Model.)

- J. M. HOLLADAY.

AX HEAD.

Patented Jan. 14, 1890..

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UNITED STATES PATENT OFFICE.

JOHN M. HOLLADAY, OF HOLLADAY, VIRGINIA.

.Ax-HEAD.

SPECIFICATION forming part of Letters Patent No. 419,523, dated January14, 1890. Application filed August 24, 1889. Serial No. 321,828. (Nomodel.)

place, and different blades may be inserted in the same head fordifferent work.

A further object of the invention is to so construct a seat and disposethe stock of the head and blade as to gain the greatest rigidity andstrengthand to adapt these parts for a ready manufacture by ordinarylathetools.

'With thesev general objects in view the invention consists in certainfeaturesof construction hereinafter specitied, and particularly pointedout in the claims.

Referring tothe drawings, Figure l is a side elevation of an .ax-headprovided with a reversible blade, all constructed in accordance with myinvention. Fig. 2 is a similar view of the head, the blade removed. Fig.3 is a section on the line :t oc of Fig. 1; Fig. 4, a perspective of theremovable bit.

Like numerals of reference indicate like parts in all the Afigures ofthe drawings.

l represents an aX-head, which may be cast, rolled, swaged, or forged,providedwith the usual belve-receiving eye 2, andl having its endsquarely and transversely terminating. Each of the side faces at theedge of the head is provided with an inwardly extending and registeringU-shaped recess 3, the walls of which are inwardly inclined ordovetailed, as at 4. By reason of the opposite recesses there is leftintermediate each recess a portion of the stock of the head forming aweb 5, which is provided with a perforation 6.

7 represents a removable bit having the forward cutting edge 8 and itsrear end curved to correspond with the recesses in the head, and alsobeveled to iit within the dovetailed walls thereof, and thus interlockvthere with.

For the purpose of receiving the web of the head the rear end of the bitis bifurcated, as at.8*, and thus said bit, when its rear end is enteredinto the recesses of a head, embraces the web portion of the head, thebifurcation forming opposite wings or plates 9, which enter therecesses. An opening 10 is formed in each of the wings 9, said openingsbeing in line with the similar opening in the Web, and through the threealigning openings is inserted, preferably, a rivet 1l, the head of whichis countersunk within the bit, so as not to provide an obstruction incutting. Shoulders l2 are formed at each upper and lower edge of therecesses in the head, which shoulders take into and abut against theends of corresponding lugs 13 at the opposite terminals of the curvedplates 9, so that any lateral strain is met with resistance not only bythe interlocking recesses and wings, but also by the shouldersdescribed, and I have thus provided an extremely rigid and immovableconnection between the bit and head, and yet one which permits of aready removal and reversal of the blade or the insertion of a substituteblade, as will be apparent.

Having described my invention, what I claim is 1. The combination, withan aX-head terminating in a web and opposite semicircular dovetailedrecesses, of a bit terminating in opposite divergent semiciroulardovetailed plates adapted to enter the recesses and forming anintermediate space for the web of the head, and a securing-pin insertedthrough openings in the plates and web, substantially as speciiied.

2. The combination, with an aX-head havl ing a central web and oppositecurved recesses, of a removable reversible bit, the rear ends of whichterminate in opposite curved divergent plates mounted in the recessesand having an intermediate opening for the reception of the web,perforations formed .through the plates and web, and a removable rivetinserted in the openings, substantially as specified.

3. The combination, with an ax-head havv ing a central web andlaterally-opposite dovei tailed semicircular recesses terminating inshoulders, of a removable reversible bit, the In testimony that I claimthe foregoing as rear end of whieh `is blfureated to receive a my own I`havehereto affixed my `signature web and to form opposite semieireularbevin presence of two witnesses. eI-edged plates for inserting in therecesses,

5 said plates terminating at their opposite ends JOI-IN M. HOLLADAY.

in recesses having abutting ends for the reception of the shoulders ofthe head, open- Witnesses: ings formed in the plates and web, and a JOHNHUNTER, J r., rivet inserted through the openings, substan- B. B.PEYNUN.

1o tially as specified.

